Abstract
Interleukin-6-like (IL-6-like) immunoreactivity was sought in inflamed and normal human skin using the same immunohistochemical technique as for detection of neuropeptides. Such immunoreactivity was found in dermal and in a few intraepidermal nerve-like fibres in biopsy specimens from inflamed skin from patients with positive epicutaneous patchtest reactions to nickel sulphate, and in skin specimens from patients with atopic dermatitis and prurigo nodularis. However, IL-6-like immunoreactivity was also found in nerve-like fibres in specimens from nonlesional skin. In skin from patients with positive epicutaneous patch-test reactions there was a statistically significantly (P<0.01) higher number of IL-6-positive nerve fibres in the epidermis than in normal skin, in contrast to the papillary dermis, in which no difference was found. Moreover, there were clusters of nerve-like fibres with IL-6-like immunoreactivity in the dermis of prurigo nodularis lesions. In these nerve-like fibres, the colocalization of the immunoreactivities for IL-6 and calcitonin gene-related peptide was indicated. Localization of immunoreactivity to nerve-like structures surrounding the eccrine sweat glands indicates that IL-6 is present in autonomic as well as in sensory nerve fibres.
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Nordlind, K., Chin, L.B., Ahmed, A.A. et al. Immunohistochemical localization of interleukin-6-like immunoreactivity to peripheral nerve-like structures in normal and inflamed human skin. Arch Dermatol Res 288, 431–435 (1996). https://doi.org/10.1007/BF02505230
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DOI: https://doi.org/10.1007/BF02505230